<template>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" >
      </div>
      <div slot="center" class="title">
        <div v-for="(item, index) in titles" class="title-item" :class="{active: index === currentIndex}" @click="titleClick(index)">{{item}}</div>
      </div>
    </nav-bar>
</template>

<script>
  import NavBar from "components/common/navbar/NavBar";
  export default {
    name: "DetailNavBar",
    components: {
      NavBar
    },
    data() {
      return {
        titles: ['商品', '参数', '评论', '推荐'],
        currentIndex: 0
      }
    },
    methods:{
      titleClick(index) {
        // this.currentIndex = index;
        this.$emit('titleClick', index)
      },
      backClick() {
        this.$router.go(-1) //this.$router.back()
      }
    }

  }
</script>

<style scoped>
  .title {
    display: flex;
  }
  .title-item {
    flex: 1;
    font-size: 1em;
  }
  .active {
    color: var(--color-tint);
  }
  .back img{
    vertical-align: middle
  }
</style>
